Kafka Streams: passthrough config

[ngc4579]

When setting passthrough configuration for Kafka Streams like this:

kafka-streams.acks: all
kafka-streams.batch.size: 131072
...

Are these configuration settings expected to be printed out on application start as part of the configuration (StreamsConfig values)? (Because: actually they aren't. Or else do they need to be prepended with kafka-streams.producer as they are producer configs?)

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/cc @alesj (kafka,kafka-streams), @cescoffier (kafka), @gunnarmorling (kafka-streams), @ozangunalp (kafka,kafka-streams), @radcortez (config), @rquinio (kafka-streams)